Display substrate, manufacturing method thereof and display device

ABSTRACT

The present disclosure provides a display substrate, a manufacturing method thereof and a display device. The display substrate includes a base substrate and a plurality of subpixels arranged in an array form on the base substrate. Each subpixel includes a voltage stabilizing electrode, and a subpixel driving circuitry including a driving transistor, and a first transistor, a first electrode of which is coupled to a second electrode of the driving transistor, and a second electrode of which is coupled to a gate electrode of the driving transistor. An active layer of the first transistor includes a first semiconductor portion and a second semiconductor portion spaced apart from each other, and a conductor portion coupled to thereto. An orthogonal projection of the conductor portion onto the base substrate overlaps an orthogonal projection of voltage stabilizing electrode of a previous subpixel in the first direction onto the base substrate.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, inparticular to a display substrate, a manufacturing method thereof and adisplay device.

BACKGROUND

With the mature of the Active-Matrix Organic Light-Emitting Diode(AMOLED) technology, the use of AMOLED in mobile terminals has becomemore and more popular. However, it is difficult to ensure brightnessuniformity of subpixels of a display panel, and thereby a display effectof the display panel may be adversely affected.

SUMMARY

An object of the present disclosure is to provide a display substrate, amanufacturing method thereof and a display device, so as to ensure thebrightness uniformity of the subpixels of the display panel.

In one aspect, the present disclosure provides in some embodiments adisplay substrate, including a base substrate and a plurality ofsubpixels arranged in an array form on the base substrate. The pluralityof subpixels is arranged in rows, and each row of subpixels includes Nsubpixels arranged in sequence along a first direction, where N is apositive integer. Each subpixel includes a subpixel driving circuitry,the subpixel driving circuitry includes a driving transistor and a firsttransistor, a first electrode of the first transistor is coupled to asecond electrode of the driving transistor, a second electrode of thefirst transistor is coupled to a gate electrode of the drivingtransistor, and an active layer of the first transistor includes a firstsemiconductor portion and a second semiconductor portion spaced apartfrom each other, and a conductor portion coupled to the firstsemiconductor portion and the second semiconductor portion. Each offirst to (N−1)^(th) subpixels in the first direction further includes avoltage stabilizing electrode. Each row of subpixels includes aplurality of first subpixels, the first subpixels of N^(th) subpixels inthe first direction are target subpixels, the target subpixel isarranged closest to a first boundary of the display substrate in the rowof subpixels, and an orthogonal projection of the conductor portion ofthe first transistor of the target subpixel onto the base substrateoverlaps an orthogonal projection of the voltage stabilizing electrodeof the (N−1)^(th) subpixel in the row onto the base substrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a power source signal line, at least a part of thepower source signal line extends in a second direction, and the voltagestabilizing electrode is coupled to the power source signal line.

In a possible embodiment of the present disclosure, the voltagestabilizing electrode includes a first portion and a second portioncoupled to each other, an orthogonal projection of the first portiononto the base substrate overlaps an orthogonal projection of the powersource signal line onto the base substrate at an overlapping regionwhere the first portion is coupled to the power source signal line, atleast a part of the second portion extends along the first direction toa next subpixel in the first direction, and an orthogonal projection ofthe conductor portion onto the base substrate overlaps an orthogonalprojection of a second portion of a previous subpixel of the subpixel towhich the conductor portion belongs in the first direction onto thesubstrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a data line, at least a part of the data line extendsin a second direction intersecting the first direction, the subpixeldriving circuitry further includes a first conductive connection member,the first conductive connection member extends along the seconddirection, an orthogonal projection of the second electrode of the firsttransistor onto the base substrate overlaps an orthogonal projection ofa first end of the first conductive connection member onto the basesubstrate at a first overlapping region, the second electrode of thefirst transistor is coupled to the first end of the first conductiveconnection member at the first overlapping region, a second end of thefirst conductive connection member is coupled to the gate electrode ofthe driving transistor, and the orthogonal projection of the firstportion onto the base substrate is located between an orthogonalprojection of the first overlapping region onto the base substrate andan orthogonal projection of the data line onto the base substrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a data line, and at least a part of the data lineextends in a second direction intersecting the first direction. Thesubpixel driving circuitry further includes a data write-in transistor,a gate electrode of which is coupled to the gate line, a first electrodeof which is coupled to the data line, and a second electrode of which iscoupled to the first electrode of the driving transistor. The orthogonalprojection of the second portion onto the base substrate overlaps anorthogonal projection of the first electrode of the data write-intransistor onto the base substrate, and the orthogonal projection of thesecond portion onto the base substrate overlaps an orthogonal projectionof the data line onto the base substrate.

In a possible embodiment of the present disclosure, the orthogonalprojection of the data line onto the base substrate is located betweenan orthogonal projection of a channel portion of the data write-intransistor onto the base substrate and the orthogonal projection of theconductor portion of the first transistor of a next subpixel onto thebase substrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a data line, and at least a part of the data lineextends in a second direction intersecting the first direction. Thesubpixel driving circuitry further includes: a second conductiveconnection member, at least a part of the second conductive connectionmember extending along the second direction; a second transistor, a gateelectrode of which is coupled to a resetting signal line, a firstelectrode of which is coupled to an initialization signal line, and asecond electrode of which is coupled to the second electrode of thefirst transistor; and a seventh transistor, a gate electrode of which iscoupled to a resetting signal line of a next subpixel in the seconddirection, and a first electrode of which is coupled to aninitialization signal line of the next subpixel in the second direction,and a second electrode of which is coupled to an anode of acorresponding light-emitting element. An orthogonal projection of achannel portion of the second transistor onto the base substrate islocated between the orthogonal projection of the data line onto the basesubstrate and an orthogonal projection of the second conductiveconnection member onto the base substrate, and an orthogonal projectionof a channel portion of the seventh transistor onto the base substrateis located between the orthogonal projection of the second conductiveconnection member coupled to the seventh transistor onto the basesubstrate and an orthogonal projection of the data line of a previoussubpixel of the subpixel to which the seventh transistor belongs in thefirst direction onto the base substrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a data line, and at least a part of the data lineextends in a second direction intersecting the first direction. Thesubpixel driving circuitry further includes: a fifth transistor, a gateelectrode of which is coupled to a light-emission control signal line, afirst electrode of which is coupled to the power source signal line, anda second electrode of which is coupled to the first electrode of thedriving transistor; and a sixth transistor, a gate electrode of which iscoupled to the light-emission control signal line, a first electrode ofwhich is coupled to the second electrode of the driving transistor, anda second electrode of which is coupled to an anode of a light-emittingelement. An orthogonal projection of a channel portion of the fifthtransistor onto the base substrate is located between the orthogonalprojection of the data line onto the base substrate and an orthogonalprojection of the power source signal line onto the base substrate, andan orthogonal projection of a channel portion of the sixth transistoronto the base substrate is located between the orthogonal projection ofthe second conductive connection member coupled to the sixth transistoronto the base substrate and an orthogonal projection of the data line ofa previous subpixel of the subpixel to which the sixth transistorbelongs in the first direction onto the base substrate.

In a possible embodiment of the present disclosure, each subpixelfurther includes a data line, at least a part of the data line extendsin a second direction intersecting the first direction, an orthogonalprojection of the first electrode of the driving transistor onto thebase substrate is located between an orthogonal projection of the gateelectrode of the driving transistor onto the base substrate and theorthogonal projection of the data line onto the base substrate, and anorthogonal projection of the second electrode of the driving transistoronto the base substrate is located between the orthogonal projection ofthe gate electrode of the driving transistor onto the base substrate andan orthogonal projection of the data line of a previous subpixel of thesubpixel to which the driving transistor belongs in the first directiononto the base substrate.

In a possible embodiment of the present disclosure, the subpixel drivingcircuitry further includes a storage capacitor, a first electrode plateof the storage capacitor is coupled to the gate electrode of the drivingtransistor, a second electrode plate of the storage capacitor is coupledto the power source signal line, and the voltage stabilizing electrodeand the second electrode plate of the storage capacitor are arranged ata same layer and made of a same material.

In a possible embodiment of the present disclosure, each subpixelfurther includes: a data line, at least a part of the data lineextending in a second direction intersecting the first direction; and apower source signal line. At least a part of the power source signalline extends in the second direction, an orthogonal projection of thesecond electrode plate of the storage capacitor onto the base substrateoverlaps the orthogonal projection of the power source signal line ontothe base substrate at a second overlapping region where the secondelectrode of the storage capacitor is coupled to the power source signalline, and the orthogonal projection of the data line onto the basesubstrate is located between an orthogonal projection of the firstoverlapping region onto the base substrate and an orthogonal projectionof the gate electrode of the driving transistor of a next subpixel ofthe subpixel to which data line belongs in the first direction onto thebase substrate.

In a possible embodiment of the present disclosure, the first subpixelincludes a green subpixel.

In a possible embodiment of the present disclosure, the target subpixelincludes a green subpixel.

In a possible embodiment of the present disclosure, the plurality ofsubpixels further includes red subpixels and blue subpixels.

In a possible embodiment of the present disclosure, each row ofsubpixels includes a plurality of groups of subpixels arranged along thefirst direction, and each group of subpixels includes red subpixels,green subpixels, blue subpixels, and green subpixels cyclically arrangedalong the first direction.

In a possible embodiment of the present disclosure, in each row ofsubpixels along the first direction, a subpixel closest to the firstboundary is the green subpixel.

In a possible embodiment of the present disclosure, the subpixel drivingcircuitry includes: a first transistor, a gate electrode of which iscoupled to the gate line; a second transistor, a gate electrode of whichis coupled to a resetting signal line, a first electrode of which iscoupled to an initialization signal line, and a second electrode ofwhich is coupled to the second electrode of the first transistor; a datawrite-in transistor, a gate electrode of which is coupled to the gateline, a first electrode of which is coupled to the data line, and asecond electrode of which is coupled to the first electrode of thedriving transistor; a fifth transistor, a gate electrode of the which iscoupled to a light-emission control signal line, a first electrode ofwhich is coupled to the power source signal line, and a second electrodeof which is coupled to the first electrode of the driving transistor; asixth transistor, a gate electrode of which is coupled to thelight-emission control signal line, a first electrode of which iscoupled to the second electrode of the driving transistor, and a secondelectrode of which is coupled to an anode of a light-emitting element; aseventh transistor, a gate electrode of which is coupled to a resettingsignal line of a next subpixel in the second direction, and a firstelectrode of which is coupled to an initialization signal line of thenext subpixel in the second direction, and a second electrode of whichis coupled to the anode of the corresponding light-emitting element; anda storage capacitor, a first electrode plate of which is coupled to thegate electrode of the driving transistor, and a second electrode plateof which is coupled to the power source signal line.

In another aspect, the present disclosure provides in some embodiments adisplay device, including the above-mentioned display substrate.

In yet another aspect, the present disclosure provides in someembodiments a method for manufacturing a display substrate, includingforming a plurality of subpixels arranged in an array form on a basesubstrate. The plurality of subpixels is arranged in rows, and each rowof subpixels includes a plurality of subpixels arranged in sequencealong a first direction. Each subpixel includes a voltage stabilizingelectrode, and a subpixel driving circuitry. The subpixel drivingcircuitry includes a driving transistor and a first transistor, a firstelectrode of the first transistor is coupled to a second electrode ofthe driving transistor, a second electrode of the first transistor iscoupled to a gate electrode of the driving transistor, and an activelayer of the first transistor includes a first semiconductor portion anda second semiconductor portion spaced apart from each other, and aconductor portion coupled to the first semiconductor portion and thesecond semiconductor portion. An orthogonal projection of the conductorportion onto the base substrate overlaps an orthogonal projection of thesecond portion of a previous subpixel of the subpixel to which theconductor portion belongs in the first direction onto the basesubstrate. Each row of subpixels includes a plurality of firstsubpixels, the plurality of first subpixels includes target subpixels,and each target subpixel is arranged closest to a first boundary of thedisplay substrate in the row of subpixels.

In a possible embodiment of the present disclosure, the subpixel drivingcircuitry includes a storage capacitor, a first electrode plate of thestorage capacitor is coupled to the gate electrode of the drivingtransistor, and a second electrode plate of the storage capacitor iscoupled to the power source signal line. The forming the plurality ofsubpixels arranged in an array form on the base substrate includesforming the voltage stabilizing electrode and the second electrode plateof the storage capacitor simultaneously through a single patterningprocess.

According to the embodiments of the present disclosure, the active layerof the first transistor may include the first semiconductor portion andthe second semiconductor portion spaced apart from each other, and theconductor portion coupled to the first semiconductor portion and thesecond semiconductor portion. The orthogonal projection of the conductorportion onto the base substrate may overlap the orthogonal projection ofthe voltage stabilizing electrode of the previous subpixel of thesubpixel to which the semiconductor portion belongs in the firstdirection onto the base substrate. Hence, the voltage stabilizingelectrode and the conductor portion may form a voltage stabilizingcapacitor. When on and off states of the first transistor change, it isable for the voltage stabilizing capacitor to stabilize a voltage of thefirst transistor, thereby to improve the brightness uniformity of thesubpixels of the display panel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a circuit diagram of a subpixel driving circuitry according toone embodiment of the present disclosure;

FIG. 2A is a schematic view showing an intermediate manufacturingprocess of a display substrate according to one embodiment of thepresent disclosure;

FIG. 2B is another schematic view showing the intermediate manufacturingprocess of the display substrate according to one embodiment of thepresent disclosure;

FIG. 2C is yet another schematic view showing the intermediatemanufacturing process of the display substrate according to oneembodiment of the present disclosure;

FIG. 2D is still yet another schematic view showing the intermediatemanufacturing process of the display substrate according to oneembodiment of the present disclosure;

FIG. 2E is still yet another schematic view showing the intermediatemanufacturing process of the display substrate according to oneembodiment of the present disclosure;

FIG. 2F is still yet another schematic view showing the intermediatemanufacturing process of the display substrate according to oneembodiment of the present disclosure;

FIG. 2G is still yet another schematic view showing the intermediatemanufacturing process of the display substrate according to oneembodiment of the present disclosure; and

FIG. 3 is a schematic view showing a voltage stabilizing electrode ofthe display substrate according to one embodiment of the presentdisclosure.

DETAILED DESCRIPTION

The present disclosure provides in some embodiments a display substrate,which includes a base substrate and a plurality of subpixels arranged inan array form on the base substrate. The plurality of subpixels isarranged in rows, and each row of subpixels includes N subpixelsarranged in sequence along a first direction, where N is a positiveinteger.

Each subpixel may include a subpixel driving circuitry.

As shown in FIG. 1, the subpixel driving circuitry may include a drivingtransistor T3 and a first transistor T1, a first electrode of the firsttransistor T1 may be coupled to a second electrode of the drivingtransistor T3, and a second electrode of the first transistor T1 may becoupled to a gate electrode of the driving transistor T3.

As shown in FIGS. 2A to 2C, an active layer of the first transistor T1may include a first semiconductor portion 211 and a second semiconductorportion 212 spaced apart from each other, and a conductor portion 213coupled to the first semiconductor portion 211 and the secondsemiconductor portion 212.

Each of first to (N−1)^(th) subpixels along the first direction mayfurther include a voltage stabilizing electrode, each row of subpixelsmay include a plurality of first subpixels, the first subpixels ofN^(th) subpixels in the first direction may be target subpixels, thetarget subpixel in the row of subpixels may be arranged closest to afirst boundary of the display substrate, and an orthogonal projection ofthe conductor portion of the first transistor of the target subpixelonto the base substrate may overlap an orthogonal projection of thevoltage stabilizing electrode of the (N−1)^(th) subpixel in the row ontothe base substrate.

As shown in FIG. 2C, an orthogonal projection of the conductor portion213 onto the base substrate may overlap an orthogonal projection of thevoltage stabilizing electrode of a previous subpixel of the subpixel towhich the conductor portion belongs in the first direction onto the basesubstrate.

In the embodiments of the present disclosure, for the subpixels of thedisplay substrate, the first transistor T1 of each subpixel at theboundary of the display substrate may be more sensitive to a voltagechange, so the scheme in the embodiments of the present disclosure ismore suitable for the subpixels arranged closest to the boundary of thedisplay substrate.

In the embodiments of the present disclosure, when the orthogonalprojection of the voltage stabilizing electrode 24 onto the basesubstrate overlaps the orthogonal projection of the conductor portion213 onto the base substrate, the voltage stabilizing electrode 24 andthe conductor portion 213 may be electrode plates of a capacitorrespectively, and they may form a voltage stabilizing capacitor. When onand off states of the first transistor T1 change, it is able for thevoltage stabilizing capacitor to stabilize a voltage of the firsttransistor T1, thereby to improve the brightness uniformity of thesubpixels of the display substrate.

In some embodiments of the present disclosure, as shown in FIG. 2E, eachsubpixel may further include a power source signal line 11, at least apart of the power source signal line 11 may extend in a seconddirection, and the voltage stabilizing electrode 24 may be coupled tothe power source signal line 11. The first direction refers to a lateraldirection in FIGS. 2A to 2G, and the second direction refers to alongitudinal direction in FIGS. 2A to 2G.

The voltage stabilizing electrode 24 may be coupled to the power sourcesignal line 11 to apply a stable voltage to the voltage stabilizingelectrode 24 through the power source signal line 11. In this way, whenthe voltage stabilizing electrode 24 and the conductor portion 213 forma capacitor, it is able to stabilize the voltage of the first transistorT1.

In some embodiments of the present disclosure, as shown in FIG. 3, thevoltage stabilizing electrode 24 may include a first portion 241 and asecond portion 242 coupled to each other, an orthogonal projection ofthe first portion 241 onto the base substrate may overlap an orthogonalprojection of the power source signal line 11 onto the base substrate atan overlapping region where the first portion 241 is coupled to thepower source signal line 11, and at least a part of the second portion242 may extend along the first direction.

As shown in FIGS. 2C and 2D, the orthogonal projection of the conductorportion 213 onto the base substrate may overlap an orthogonal projectionof the second portion 242 of a previous subpixel of the subpixel towhich the conductor portion belongs in the first direction onto the basesubstrate.

As shown in FIG. 3, the voltage stabilizing electrode 24 in theembodiments of the present disclosure may be approximately L-shaped. Asshown in FIG. 2C, through controlling an extension position and anextension direction of an end portion, the voltage stabilizing electrode24 may overlap the conductor portion 213 of the next subpixel in thefirst direction to form a voltage stabilizing capacitor for stabilizingthe voltage.

In some embodiments of the present disclosure, as shown in FIG. 2E, eachsubpixel may further include a data line 16, and at least a part of thedata line 16 may extend in a second direction intersecting the firstdirection.

As shown in FIG. 2E, the subpixel driving circuitry may further includea first conductive connection member 29 extending along the seconddirection. For example, the second direction may be the longitudinaldirection shown in FIG. 1.

As shown in FIG. 2E, an orthogonal projection of the second electrode ofthe first transistor T1 onto the base substrate may overlap anorthogonal projection of a first end of the first conductive connectionmember 29 onto the base substrate at a first overlapping region 291where the second electrode of the first transistor T1 is coupled to thefirst end of the first conductive connection member 29, and a second endof the first conductive connection member 29 may be coupled to the gateelectrode of the driving transistor T3.

Referring to FIGS. 2E and 3, the orthogonal projection of the firstportion 241 onto the base substrate may be located between an orthogonalprojection of the first overlapping region 291 onto the base substrateand an orthogonal projection of the data line 16 onto the basesubstrate.

A potential at the gate electrode of the driving transistor may beaffected by a signal jump across the data line 16, and brightness of apixel may be affected by the stability of the potential at the gateelectrode. When the orthogonal projection of the first portion 241 ontothe base substrate is located between the orthogonal projection of thefirst overlapping region 291 onto the base substrate and the orthogonalprojection of the data line 16 onto the base substrate, it is able toimprove the stability of the potential at the gate electrode of thedriving transistor T3.

In some embodiments of the present disclosure, each subpixel may furtherinclude a data line 16, and at least a part of the data line 16 mayextend in a second direction intersecting the first direction.

The subpixel driving circuitry may further include a data write-intransistor T4, a gate electrode of which is coupled to the gate line 12,a first electrode of which is coupled to the data line 16, and a secondelectrode of which is coupled to the first electrode of the drivingtransistor T3.

Referring to FIGS. 2E and 3 again, the orthogonal projection of thesecond portion 242 onto the base substrate may overlap an orthogonalprojection of the first electrode of the data write-in transistor T4onto the base substrate, and the orthogonal projection of the secondportion 242 onto the base substrate may overlap the orthogonalprojection of the data line 16 onto the base substrate.

In some embodiments of the present disclosure, the orthogonal projectionof the data line 16 onto the base substrate may be located between anorthogonal projection of a channel portion of the data write-intransistor T4 onto the base substrate and an orthogonal projection ofthe conductor portion of the first transistor T1 of a next subpixel ontothe base substrate.

In some embodiments of the present disclosure, as shown in FIG. 2E, eachsubpixel may further include a data line 16, and at least a part of thedata line 16 may extend in a second direction intersecting the firstdirection.

The subpixel driving circuitry may further include a second conductiveconnection member 3030, a second transistor T2 and a seventh transistorT7, and at least a part of the second conductive connection member 30may extend along the second direction.

As shown in FIG. 1, a gate electrode of the second transistor T2 may becoupled to a resetting signal line 15, a first electrode of the secondtransistor T2 may be coupled to an initialization signal line 14, and asecond electrode of the second transistor T2 may be coupled to thesecond electrode of the first transistor T1.

A gate electrode of the seventh transistor T7 may be coupled to aresetting signal line 15′ of a next subpixel in the second direction,and a first electrode of the seventh transistor T7 may be coupled to aninitialization signal line 14′ of the next subpixel along the seconddirection, and a second electrode of the seventh transistor T7 may becoupled to an anode 27 of a corresponding light-emitting element EL.

As shown in FIG. 2E, an orthogonal projection of a channel portion ofthe second transistor T2 onto the base substrate may be located betweenthe orthogonal projection of the data line 16 onto the base substrateand an orthogonal projection of the second conductive connection member30 onto the base substrate.

Referring to FIG. 2E again, an orthogonal projection of a channelportion of the seventh transistor T7 onto the base substrate may belocated between the orthogonal projection of the second conductiveconnection member 30 coupled to the seventh transistor onto the basesubstrate and the orthogonal projection of the data line 16 of aprevious subpixel of the subpixel to which the seventh transistorbelongs in the first direction onto the base substrate.

In some embodiments of the present disclosure, each subpixel may furtherinclude a data line 16, and at least a part of the data line 16 mayextend in the second direction intersecting the first direction.

The subpixel driving circuitry may further include a fifth transistor T5and a sixth transistor T6, a gate electrode of the fifth transistor T5may be coupled to a light-emission control signal line 13, a firstelectrode of the fifth transistor T5 may be coupled to the power sourcesignal line 11, and a second electrode of the fifth transistor T5 may becoupled to the first electrode of the driving transistor T3.

A gate electrode of the sixth transistor T6 may be coupled to thelight-emission control signal line 13, a first electrode of the sixthtransistor T6 may be coupled to the second electrode of the drivingtransistor T3, and a second electrode of the sixth transistor T6 may becoupled to an anode 27 of a light-emitting element EL.

An orthogonal projection of a channel portion of the fifth transistor T5onto the base substrate may be located between the orthogonal projectionof the data line 16 onto the base substrate and the orthogonalprojection of the power source signal line 11 onto the base substrate.

An orthogonal projection of a channel portion of the sixth transistor T6onto the base substrate may be located between the orthogonal projectionof the second conductive connection member 30 coupled to the sixthtransistor onto the base substrate and the orthogonal projection of thedata line 16 of a previous subpixel of the subpixel to which the sixthtransistor belongs in the first direction onto the base substrate.

In some embodiments of the present disclosure, each subpixel may furtherinclude a data line 16, and at least a part of the data line 16 mayextends in a second direction intersecting the first direction.

An orthogonal projection of the first electrode of the drivingtransistor T3 onto the base substrate may be located between anorthogonal projection of the gate electrode of the driving transistor T3onto the base substrate and the orthogonal projection of the data line16 onto the base substrate, and an orthogonal projection of the secondelectrode of the driving transistor T3 onto the base substrate may belocated between the orthogonal projection of the gate electrode of thedriving transistor T3 onto the base substrate and the orthogonalprojection of the data line 16 of a previous subpixel of the subpixel towhich the driving transistor belongs in the first direction onto thebase substrate.

In some embodiments of the present disclosure, the subpixel drivingcircuitry may further include a storage capacitor Cst, a first electrodeplate of the storage capacitor Cst may be coupled to the gate electrodeof the driving transistor T3, a second electrode plate of the storagecapacitor Cst may be coupled to the power source signal line 11, and thevoltage stabilizing electrode 24 and the second electrode plate of thestorage capacitor Cst may be arranged at a same layer and made of a samematerial.

In this regard, the voltage stabilizing electrode 24 and the storagecapacitor Cst may be formed through a single patterning process, so asto reduce the quantity of processes as well as the manufacture cost.

In some embodiments of the present disclosure, each subpixel may furtherinclude a data line 16 and a power source signal line 11. At least apart of the data line 16 may extend in a second direction intersectingthe first direction. At least a part of the power source signal line 11may extend in the second direction.

An orthogonal projection of the second electrode plate of the storagecapacitor Cst onto the base substrate may overlap an orthogonalprojection of the power source signal line 11 onto the base substrate ata second overlapping region where the second electrode plate of thestorage capacitor Cst is coupled to the power source signal line, andthe orthogonal projection of the data line 16 onto the base substratemay be located between an orthogonal projection of the first overlappingregion onto the base substrate and the orthogonal projection of the gateelectrode of the driving transistor T3 of a next subpixel of thesubpixel to which the data line belongs in the first direction onto thebase substrate.

In some embodiments of the present disclosure, the first subpixel mayinclude a green subpixel G.

In some embodiments of the present disclosure, the target subpixel mayinclude a green subpixel G.

It should be appreciated that, the first transistor T1 of the greensubpixel G may be more sensitive to the voltage change, so in theembodiments of the present disclosure, mainly the green subpixel G maybe compensated.

In some embodiments of the present disclosure, the plurality ofsubpixels may further include red subpixels and blue subpixels.

In some embodiments of the present disclosure, each row of subpixels mayinclude a plurality of groups of subpixels arranged along the firstdirection, and each group of subpixels may include red subpixels R,green subpixels G, blue subpixels B, and green subpixels G that arecyclically arranged along the first direction.

In some embodiments of the present disclosure, in each row of subpixelsalong the first direction, a subpixel closest to the first boundary maybe the green subpixel G.

As shown in FIG. 2G, in the embodiments of the present disclosure, thesubpixels in different colors may be arranged in a diamond shape. Itshould be appreciated that, in each row, the red subpixel R, the greensubpixel G, the blue subpixel B, and the green subpixel G may bearranged sequentially. For example, a subpixel at an initial positionmay be a red subpixel R or a blue subpixel B, so that the subpixel atthe end may be a green subpixel G. In other words, in each row ofsubpixels, all the subpixels close to one side of the boundary may bered subpixels R or blue subpixels, and all the subpixels close to theother side of the boundary may be green subpixels G. The first boundarymay be a boundary where the green subpixels G are located.

As shown in FIG. 1, in a possible embodiment of the present disclosure,the subpixel driving circuitry may include: a first transistor T1, agate electrode of which is coupled to the gate line 12; a secondtransistor T2, a gate electrode of which is coupled to the resettingsignal line 15, a first electrode of which is coupled to theinitialization signal line 14, and a second electrode of which iscoupled to a second electrode of the first transistor T1; a drivingtransistor T3; a data write-in transistor T4, a gate electrode of whichis coupled to the gate line 12, a first electrode of which is coupled tothe data line 16, and a second electrode of which is coupled to a firstelectrode of the driving transistor T3; a fifth transistor T5, a gateelectrode of which is coupled to the light-emission control signal line13, a first electrode of which is coupled to the power source signalline 11, and a second electrode of which is coupled to the firstelectrode of the driving transistor T3; a sixth transistor T6, a gateelectrode of which is coupled to the light-emission control signal line13, a first electrode of which is coupled to a second electrode of thedriving transistor T3, and a second electrode of which is coupled to ananode 27 of a light-emitting element EL; a seventh transistor T7, a gateelectrode of which is coupled to the resetting signal line 15′ of a nextsubpixel in the second direction, and a first electrode of which iscoupled to the initialization signal line 14′ of the next subpixel alongthe second direction, and a second electrode of which is coupled to theanode 27 of the corresponding light-emitting element EL; and a storagecapacitor Cst, a first electrode plate of which is coupled to a gateelectrode of the driving transistor T3, and a second electrode plate ofwhich is coupled to the power source signal line 11.

The present disclosure further provides in some embodiments a displaydevice including the above-mentioned display substrate.

The display device includes the above-mentioned display substrate, so itis able for the display device to achieve at least the above-mentionedtechnical effect, which will not be particularly defined herein.

The present disclosure further provides in some embodiments a method formanufacturing a display substrate, which includes forming a plurality ofsubpixels arranged in an array form on a base substrate.

During the manufacture, as shown in FIG. 2A, an active layer 21 may beformed onto the base substrate at first. Next, as shown in FIG. 2B, afirst gate layer 22 may be formed. Next, as shown in FIG. 2C, a secondgate layer 23 and the voltage stabilizing electrode 24 may be formed.Next, as shown in FIG. 2D, an interlayer dielectric layer 25 may beformed. Next, as shown in FIG. 2E, a source/drain electrode layer,including the power source signal line 11 and the data line 16, may beformed. Next, as shown in FIG. 2F, a PLN via hole 26 may be formed.Finally, as shown in FIG. 2G, the anode 27 of the light-emitting elementEL and a pixel definition layer 28 may be formed.

The manufactured display substrate may be that mentioned hereinabove,and thus will not be particularly defined herein.

In some embodiments of the present disclosure, the subpixel drivingcircuitry may further include a storage capacitor Cst, a first electrodeplate of which is coupled to the gate electrode of the drivingtransistor T3, and a second electrode plate of which is coupled to thepower source signal line 11. The forming the plurality of subpixelsarranged in an array form onto the base substrate may include formingthe voltage stabilizing electrode and the second electrode plate of thestorage capacitor simultaneously through a single patterning process.

In the embodiments of the present disclosure, the voltage stabilizingelectrode 24 and the second electrode plate of the storage capacitor Cstmay be formed through a single patterning process, so as to reduce thequantity of processes as well as the manufacture cost.

The above embodiments are for illustrative purposes only, but thepresent disclosure is not limited thereto. Obviously, a person skilledin the art may make further modifications and improvements withoutdeparting from the spirit of the present disclosure, and thesemodifications and improvements shall also fall within the scope of thepresent disclosure.

1. A display substrate, comprising a base substrate and a plurality ofsubpixels arranged in an array form on the base substrate, wherein theplurality of subpixels is arranged in rows, and each row of subpixelscomprises N subpixels arranged in sequence along a first direction,where N is a positive integer; each subpixel comprises a subpixeldriving circuitry, the subpixel driving circuitry comprises a drivingtransistor and a first transistor, a first electrode of the firsttransistor is coupled to a second electrode of the driving transistor, asecond electrode of the first transistor is coupled to a gate electrodeof the driving transistor, and an active layer of the first transistorcomprises a first semiconductor portion and a second semiconductorportion spaced apart from each other, and a conductor portion coupled tothe first semiconductor portion and the second semiconductor portion;each of first to (N−1)^(th) subpixels in the first direction furthercomprises a voltage stabilizing electrode; and each row of subpixelscomprises a plurality of first subpixels, the first subpixels of N^(th)subpixels in the first direction are target subpixels, the targetsubpixel is arranged closest to a first boundary of the displaysubstrate in the row of subpixels, and an orthogonal projection of theconductor portion of the first transistor of the target subpixel ontothe base substrate overlaps an orthogonal projection of the voltagestabilizing electrode of the (N−1)^(th) subpixel in the row onto thebase substrate.
 2. The display substrate according to claim 1, whereineach subpixel further comprises a power source signal line, at least apart of the power source signal line extends in a second direction, andthe voltage stabilizing electrode is coupled to the power source signalline.
 3. The display substrate according to claim 2, wherein the voltagestabilizing electrode comprises a first portion and a second portioncoupled to each other, an orthogonal projection of the first portiononto the base substrate overlaps an orthogonal projection of the powersource signal line onto the base substrate at an overlapping regionwhere the first portion is coupled to the power source signal line, atleast a part of the second portion extends along the first direction toa next subpixel in the first direction, and an orthogonal projection ofthe conductor portion onto the base substrate overlaps an orthogonalprojection of a second portion of a previous subpixel of the subpixel towhich the conductor portion belongs in the first direction onto thesubstrate.
 4. The display substrate according to claim 3, wherein eachsubpixel further comprises a data line, at least a part of the data lineextends in a second direction intersecting the first direction, thesubpixel driving circuitry further comprises a first conductiveconnection member, the first conductive connection member extends alongthe second direction, an orthogonal projection of the second electrodeof the first transistor onto the base substrate overlaps an orthogonalprojection of a first end of the first conductive connection member ontothe base substrate at a first overlapping region, the second electrodeof the first transistor is coupled to the first end of the firstconductive connection member at the first overlapping region, a secondend of the first conductive connection member is coupled to the gateelectrode of the driving transistor, and the orthogonal projection ofthe first portion onto the base substrate is located between anorthogonal projection of the first overlapping region onto the basesubstrate and an orthogonal projection of the data line onto the basesubstrate.
 5. The display substrate according to claim 3, wherein eachsubpixel further comprises a data line, and at least a part of the dataline extends in a second direction intersecting the first direction,wherein the subpixel driving circuitry further comprises a data write-intransistor, a gate electrode of which is coupled to the gate line, afirst electrode of which is coupled to the data line, and a secondelectrode of which is coupled to the first electrode of the drivingtransistor, wherein the orthogonal projection of the second portion ontothe base substrate overlaps an orthogonal projection of the firstelectrode of the data write-in transistor onto the base substrate, andthe orthogonal projection of the second portion onto the base substrateoverlaps an orthogonal projection of the data line onto the basesubstrate.
 6. The display substrate according to claim 5, wherein theorthogonal projection of the data line onto the base substrate islocated between an orthogonal projection of a channel portion of thedata write-in transistor onto the base substrate and the orthogonalprojection of the conductor portion of the first transistor of a nextsubpixel onto the base substrate.
 7. The display substrate according toclaim 1, wherein each subpixel further comprises a data line, and atleast a part of the data line extends in a second direction intersectingthe first direction, wherein the subpixel driving circuitry furthercomprises: a second conductive connection member, at least a part of thesecond conductive connection member extending along the seconddirection; a second transistor, a gate electrode of which is coupled toa resetting signal line, a first electrode of which is coupled to aninitialization signal line, and a second electrode of which is coupledto the second electrode of the first transistor; and a seventhtransistor, a gate electrode of which is coupled to a resetting signalline of a next subpixel in the second direction, and a first electrodeof which is coupled to an initialization signal line of the nextsubpixel in the second direction, and a second electrode of which iscoupled to an anode of a corresponding light-emitting element, whereinan orthogonal projection of a channel portion of the second transistoronto the base substrate is located between the orthogonal projection ofthe data line onto the base substrate and an orthogonal projection ofthe second conductive connection member onto the base substrate, and anorthogonal projection of a channel portion of the seventh transistoronto the base substrate is located between the orthogonal projection ofthe second conductive connection member coupled to the seventhtransistor onto the base substrate and an orthogonal projection of thedata line of a previous subpixel of the subpixel to which the seventhtransistor belongs in the first direction onto the base substrate. 8.The display substrate according to claim 1, wherein each subpixelfurther comprises a data line, and at least a part of the data lineextends in a second direction intersecting the first direction, whereinthe subpixel driving circuitry further comprises: a fifth transistor, agate electrode of which is coupled to a light-emission control signalline, a first electrode of which is coupled to the power source signalline, and a second electrode of which is coupled to the first electrodeof the driving transistor; and a sixth transistor, a gate electrode ofwhich is coupled to the light-emission control signal line, a firstelectrode of which is coupled to the second electrode of the drivingtransistor, and a second electrode of which is coupled to an anode of alight-emitting element, wherein an orthogonal projection of a channelportion of the fifth transistor onto the base substrate is locatedbetween the orthogonal projection of the data line onto the basesubstrate and an orthogonal projection of the power source signal lineonto the base substrate, and an orthogonal projection of a channelportion of the sixth transistor onto the base substrate is locatedbetween the orthogonal projection of the second conductive connectionmember coupled to the sixth transistor onto the base substrate and anorthogonal projection of the data line of a previous subpixel of thesubpixel to which the sixth transistor belongs in the first directiononto the base substrate.
 9. The display substrate according to claim 1,wherein each subpixel further comprises a data line, and at least a partof the data line extends in a second direction intersecting the firstdirection, wherein an orthogonal projection of the first electrode ofthe driving transistor onto the base substrate is located between anorthogonal projection of the gate electrode of the driving transistoronto the base substrate and the orthogonal projection of the data lineonto the base substrate, and an orthogonal projection of the secondelectrode of the driving transistor onto the base substrate is locatedbetween the orthogonal projection of the gate electrode of the drivingtransistor onto the base substrate and an orthogonal projection of thedata line of a previous subpixel of the subpixel to which the drivingtransistor belongs in the first direction onto the base substrate. 10.The display substrate according to claim 4, wherein the subpixel drivingcircuitry further comprises a storage capacitor, a first electrode plateof the storage capacitor is coupled to the gate electrode of the drivingtransistor, a second electrode plate of the storage capacitor is coupledto the power source signal line, and the voltage stabilizing electrodeand the second electrode plate of the storage capacitor are arranged ata same layer and made of a same material.
 11. The display substrateaccording to claim 10, wherein each subpixel further comprises: a dataline, at least a part of the data line extending in a second directionintersecting the first direction; and a power source signal line,wherein at least a part of the power source signal line extending in thesecond direction, an orthogonal projection of the second electrode plateof the storage capacitor onto the base substrate overlaps the orthogonalprojection of the power source signal line onto the base substrate at asecond overlapping region where the second electrode of the storagecapacitor is coupled to the power source signal line, and the orthogonalprojection of the data line onto the base substrate is located betweenan orthogonal projection of the first overlapping region onto the basesubstrate and an orthogonal projection of the gate electrode of thedriving transistor of a next subpixel of the subpixel to which data linebelongs in the first direction onto the base substrate.
 12. The displaysubstrate according to claim 1, wherein the first subpixel comprises agreen subpixel.
 13. The display substrate according to claim 12, whereinthe target subpixel comprises a green subpixel.
 14. The displaysubstrate according to claim 12, wherein the plurality of subpixelsfurther comprises red subpixels and blue subpixels.
 15. The displaysubstrate according to claim 14, wherein each row of subpixels comprisesa plurality of groups of subpixels arranged along the first direction,and each group of subpixels comprises red subpixels, green subpixels,blue subpixels, and green subpixels cyclically arranged along the firstdirection.
 16. The display substrate according to claim 14, wherein ineach row of subpixels along the first direction, a subpixel closest tothe first boundary is the green subpixel.
 17. The display substrateaccording to claim 1, wherein the subpixel driving circuitry comprises:a first transistor, a gate electrode of which is coupled to the gateline; a second transistor, a gate electrode of which is coupled to aresetting signal line, a first electrode of which is coupled to aninitialization signal line, and a second electrode of which is coupledto the second electrode of the first transistor; a data write-intransistor, a gate electrode of which is coupled to the gate line, afirst electrode of which is coupled to the data line, and a secondelectrode of which is coupled to the first electrode of the drivingtransistor; a fifth transistor, a gate electrode of the which is coupledto a light-emission control signal line, a first electrode of which iscoupled to the power source signal line, and a second electrode of whichis coupled to the first electrode of the driving transistor; a sixthtransistor, a gate electrode of which is coupled to the light-emissioncontrol signal line, a first electrode of which is coupled to the secondelectrode of the driving transistor, and a second electrode of which iscoupled to an anode of a light-emitting element; a seventh transistor, agate electrode of which is coupled to a resetting signal line of a nextsubpixel in the second direction, and a first electrode of which iscoupled to an initialization signal line of the next subpixel in thesecond direction, and a second electrode of which is coupled to theanode of the corresponding light-emitting element; and a storagecapacitor, a first electrode plate of which is coupled to the gateelectrode of the driving transistor, and a second electrode plate ofwhich is coupled to the power source signal line.
 18. A display device,comprising the display substrate according to claim
 1. 19. A method formanufacturing a display substrate, comprising forming a plurality ofsubpixels arranged in an array form on a base substrate, wherein theplurality of subpixels is arranged in rows, and each row of subpixelscomprises a plurality of subpixels arranged in sequence along a firstdirection; each subpixel comprises a voltage stabilizing electrode, anda subpixel driving circuitry; the subpixel driving circuitry comprises adriving transistor and a first transistor, a first electrode of thefirst transistor is coupled to a second electrode of the drivingtransistor, a second electrode of the first transistor is coupled to agate electrode of the driving transistor, and an active layer of thefirst transistor comprises a first semiconductor portion and a secondsemiconductor portion spaced apart from each other, and a conductorportion coupled to the first semiconductor portion and the secondsemiconductor portion; an orthogonal projection of the conductor portiononto the base substrate overlaps an orthogonal projection of the secondportion of a previous subpixel of the subpixel to which the conductorportion belongs in the first direction onto the base substrate; and eachrow of subpixels comprises a plurality of first subpixels, the pluralityof first subpixels comprises target subpixels, and each target subpixelis arranged closest to a first boundary of the display substrate in therow of subpixels.
 20. The method according to claim 19, wherein thesubpixel driving circuitry comprises a storage capacitor, and a firstelectrode plate of the storage capacitor is coupled to the gateelectrode of the driving transistor, and a second electrode plate of thestorage capacitor is coupled to the power source signal line, whereinthe forming the plurality of subpixels arranged in an array form on thebase substrate comprises forming the voltage stabilizing electrode andthe second electrode plate of the storage capacitor simultaneouslythrough a single patterning process.